Re: lots of APIC_TMICT exit on VM with assigned NIC

[Avi Kivity]

On 07/12/2012 02:54 AM, sheng qiu wrote:
> Hi all,
> 
> i saw lots of APIC_TMICT exits while running a linux guest with
> assigned NIC. The APIC_TMICT exits is only a little fewer than the
> number of injected interrupts while handling network traffic on the
> assigned NIC.
> The network traffic was generated by running netperf on another
> machine targeted at the VM.
> 
> Is this normal? if not, what kind of problem may cause it?

I'm guessing the driver sets a timer on every interrupt.

What is the value written?  If it's large, perhaps we can set some slack
on the timer so it's not re-set every time.


-- 
error compiling committee.c: too many arguments to function


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/